Find flights
When to book
FAQs & Tips
Direct Flights
Deals

ORD

$56 Find cheap flights from Illinois to Chicago O'Hare Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to O'Hare Intl departing on 6/15. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Wed 7/10
Wed 7/17

Search hundreds of travel sites at once for deals on flights to Chicago O'Hare Airport

In the last 7 days travelers have searched 42,898,604 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Good to know

Low season

January

High season

June

Cheapest flight

$56
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly with an average 12% increase in price.
Flight from St. Louis to Chicago O'Hare Airport

FAQs for booking Illinois to Chicago O'Hare Airport flights

  • How does KAYAK find such low prices on flights from Illinois to Chicago O'Hare Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Chicago O'Hare Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Chicago O'Hare Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago O'Hare Airport from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Illinois to Chicago O'Hare Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Chicago O'Hare Airport with an airline and back to Illinois with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Chicago O'Hare Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Chicago O'Hare Airport from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Prefer to fly non-stop from Illinois to Chicago O'Hare Airport?

Find which airlines fly direct from Illinois to O'Hare Intl, which days they fly and book direct flights.

Nonstop departures

Illinois to Chicago O'Hare Intl

Monday

ANA, Aer Lingus, Aeromexico, +77 more

ANA, Aer Lingus, +78 more

Tuesday

ANA, Aer Lingus, Aerolineas Argentinas, +77 more

ANA, Aer Lingus, +78 more

Wednesday

ANA, Aer Lingus, Aeromexico, +77 more

ANA, Aer Lingus, +78 more

Thursday

ANA, Aer Lingus, Aeromexico, +76 more

ANA, Aer Lingus, +77 more

Friday

ANA, Aer Lingus, Aerolineas Argentinas, +78 more

ANA, Aer Lingus, +79 more

Saturday

ANA, Aer Lingus, Aeromexico, +77 more

ANA, Aer Lingus, +78 more

Sunday

ANA, Aer Lingus, Aerolineas Argentinas, +77 more

ANA, Aer Lingus, +78 more

See more direct flights

Nonstop returns

Chicago O'Hare Intl to Illinois

Monday

ANA, Aer Lingus, Aeromexico, +77 more

ANA, Aer Lingus, +78 more

Tuesday

ANA, Aer Lingus, Aerolineas Argentinas, +77 more

ANA, Aer Lingus, +78 more

Wednesday

ANA, Aer Lingus, Aeromexico, +77 more

ANA, Aer Lingus, +78 more

Thursday

ANA, Aer Lingus, Aeromexico, +76 more

ANA, Aer Lingus, +77 more

Friday

ANA, Aer Lingus, Aerolineas Argentinas, +78 more

ANA, Aer Lingus, +79 more

Saturday

ANA, Aer Lingus, Aeromexico, +77 more

ANA, Aer Lingus, +78 more

Sunday

ANA, Aer Lingus, Aerolineas Argentinas, +77 more

ANA, Aer Lingus, +78 more

See more direct flights
See more direct flights

Book cheap flights from Illinois to Chicago

Recent round-trip flight deals

6/30Sun
nonstopAmerican Airlines
1h 22mSTL-ORD
7/3Wed
nonstopAmerican Airlines
1h 17mORD-STL
$108
7/2Tue
1 stopSouthern / Mokulele
4h 10mSTL-ORD
7/2Tue
1 stopSouthern / Mokulele
14h 05mORD-STL
$111
7/2Tue
nonstopAmerican Airlines
1h 22mSTL-ORD
7/2Tue
nonstopAmerican Airlines
1h 17mORD-STL
$117
6/22Sat
1 stopFrontier
8h 55mSTL-ORD
6/24Mon
1 stopFrontier
13h 09mORD-STL
$118
6/25Tue
1 stop
8h 53mSTL-ORD
6/27Thu
1 stop
23h 35mORD-STL
$119
6/21Fri
1 stop
3h 35mSTL-ORD
6/24Mon
1 stop
13h 09mORD-STL
$141
7/3Wed
nonstopUnited Airlines
1h 05mDEC-ORD
7/19Fri
nonstopUnited Airlines
1h 01mORD-DEC
$158
9/7Sat
2 stopsSpirit Airlines
15h 37mSTL-ORD
9/10Tue
1 stopSpirit Airlines
11h 15mORD-STL
$164
9/7Sat
1 stopSpirit Airlines
23h 26mSTL-ORD
9/10Tue
3 stopsSpirit Airlines
24h 47mORD-STL
$170
6/20Thu
nonstopUnited Airlines
1h 05mDEC-ORD
6/26Wed
nonstopUnited Airlines
1h 01mORD-DEC
$173

Search by stops

Search by airline

Search by price

Recent one-way flight deals

6/15Sat
1 stopSouthern / Mokulele
3h 35mSTL-ORD
$56
7/4Thu
nonstopAmerican Airlines
1h 22mSTL-ORD
$59
8/27Tue
2 stopsDelta
6h 35mSTL-ORD
$83
6/25Tue
nonstopUnited Airlines
1h 05mDEC-ORD
$98
8/21Wed
2 stopsSpirit Airlines
11h 33mSTL-ORD
$102
6/25Tue
2 stopsSpirit Airlines
11h 53mSTL-ORD
$103
6/28Fri
3 stops
25h 00mEVV-ORD
$144
6/28Fri
2 stops
21h 53mEVV-ORD
$163
7/31Wed
2 stopsDelta
6h 35mSTL-ORD
$233
8/27Tue
3 stopsUnited Airlines
20h 09mSTL-ORD
$287

Search by stops

Search by airline

Search by price

Last minute flights from Illinois to O'Hare Intl

Last minute flight, train and bus deals

6/12Wed
multi-stopSouthern / Mokulele
4h 10mSTL-ORD
6/13Thu
multi-stopSouthern / Mokulele
19h 20mORD-STL
$123
6/14Fri
multi-stopSouthern / Mokulele
19h 25mSTL-ORD
6/15Sat
multi-stopSouthern / Mokulele
14h 05mORD-STL
$129
6/12Wed
nonstopUnited Airlines
1h 05mDEC-ORD
6/22Sat
nonstopUnited Airlines
1h 01mORD-DEC
$198
6/14Fri
multi-stop
19h 25mSTL-ORD
6/17Mon
multi-stop
17h 53mORD-STL
$241
6/14Fri
multi-stop
19h 25mSTL-ORD
6/15Sat
multi-stop
20h 51mORD-STL
$300
6/11Tue
nonstopAmerican Airlines
1h 12mSPI-ORD
6/15Sat
nonstopAmerican Airlines
0h 58mORD-SPI
$358
6/12Wed
nonstopAmerican Airlines
1h 12mSPI-ORD
6/16Sun
nonstopAmerican Airlines
0h 58mORD-SPI
$418
6/11Tue
nonstopUnited Airlines
1h 30mSTL-ORD
6/12Wed
nonstopUnited Airlines
1h 23mORD-STL
$437
6/14Fri
multi-stopDelta
6h 31mSTL-ORD
6/18Tue
multi-stopDelta
11h 40mORD-STL
$606
6/13Thu
multi-stopDelta
7h 13mSTL-ORD
6/16Sun
multi-stopDelta
8h 31mORD-STL
$661

Search by stops

Search by airline

Search by price

Flights to Chicago O'Hare Airport

Destination:

Chicago O'Hare Airport (ORD)United States

Return flight deals:

Chicago O'Hare Airport - Illinois

Cabin classes:

$793
$892
$1,124
$107

Browse origins:

$509
Flights from Dubuque to Chicago O'Hare Intl Airport
$343
Flights from Evansville to Chicago O'Hare Intl Airport
Flights from Marion to Chicago O'Hare Intl Airport
$279
Flights from Moline to Chicago O'Hare Intl Airport
$376
Flights from Paducah to Chicago O'Hare Intl Airport
$239
Flights from Peoria to Chicago O'Hare Intl Airport
$149
Flights from Quincy to Chicago O'Hare Intl Airport
$358
Flights from Springfield to Chicago O'Hare Intl Airport
$111
Flights from St. Louis to Chicago O'Hare Intl Airport
View more

Browse destinations: